The Crimean Khanate (Mongolian: Крымын ханлиг; Crimean Tatar / Ottoman Turkish: Къырым Ханлыгъы, Qırım Hanlığı, قرم خانلغى or Къырым Юрту, Qırım Yurtu, قرم يورتى; Russian: Крымское ханство, Krymskoje hanstvo; Ukrainian: Кримське ханство; Polish: Chanat Krymski) was a Turkic vassal state of the Ottoman Empire from 1478 to 1774, the longest-lived of the Turkic khanates that succeeded the empire of the Golden Horde. Established by Hacı I Giray in 1449, the Crimean khans were the patrilineal descendants of Toqa Temür, thirteenth son of Jochi and grandson of Genghis Khan through marriage; Temür married one of Genghis Khan's granddaughters. The khanate was located in present-day Russia and Ukraine.
Ottoman forces under Gedik Ahmet Pasha conquered all of the Crimean peninsula and joined it to the khanate in 1475. During the 16th and 17th centuries, the Crimean Khanate was an important center of the slave trade. In 1774, it was released as a nationally independent state, following the Russo-Turkish Treaty of Küçük Kaynarca, and formally annexed by the Russian Empire in 1783, becoming the Taurida Governorate.